A Floppy Disk Drive, or FDD or FD for short, is a computer disk drive that enables a user to save data to removable diskettes. Although 8″ disk drives were first made available in 1971, the first real disk drives used were the 5 1/4″ floppy disk drives, which were later replaced with 3 1/2″ floppy disk drives. Today, because of the limited capacity and reliability of floppy diskettes many computers no longer come equipped with floppy disk drives and are being replaced with CD-R, other writable discs, and flash drives.
Above is an example of each of the different floppy drives. As can be seen, the size of the floppy drive and the diskettes they use have decreased over time.